/*
 * BLEDevice.h
 *
 *  Created on: Mar 22, 2017
 *      Author: kolban
 */

#ifndef MAIN_BLEDEVICE_H_
#define MAIN_BLEDEVICE_H_

#include "soc/soc_caps.h"
#if SOC_BLE_SUPPORTED

#include "sdkconfig.h"
#if defined(CONFIG_BLUEDROID_ENABLED)

#include <esp_gattc_api.h>
#include <string.h>
#include <map>
#include <string>
//#include "BLEExceptions.h"
#include "BLERemoteService.h"
#include "BLEService.h"
#include "BLEAddress.h"
#include "BLEAdvertisedDevice.h"

class BLERemoteService;
class BLEClientCallbacks;
class BLEAdvertisedDevice;

/**
 * @brief A model of a %BLE client.
 */
class BLEClient {
public:
  BLEClient();
  ~BLEClient();

  bool                                  connect(BLEAdvertisedDevice* device);
  bool                                  connect(BLEAddress address, esp_ble_addr_type_t type = BLE_ADDR_TYPE_PUBLIC);   // Connect to the remote BLE Server
  void                                  disconnect();                  // Disconnect from the remote BLE Server
  BLEAddress                            getPeerAddress();              // Get the address of the remote BLE Server
  int                                   getRssi();                     // Get the RSSI of the remote BLE Server
  std::map<String, BLERemoteService*>*  getServices();                 // Get a map of the services offered by the remote BLE Server
  BLERemoteService*                     getService(const char* uuid);  // Get a reference to a specified service offered by the remote BLE server.
  BLERemoteService*                     getService(BLEUUID uuid);      // Get a reference to a specified service offered by the remote BLE server.
  String                                getValue(BLEUUID serviceUUID, BLEUUID characteristicUUID);   // Get the value of a given characteristic at a given service.

  void                                  handleGAPEvent(
                                           esp_gap_ble_cb_event_t  event,
                                           esp_ble_gap_cb_param_t* param);

  bool                                  isConnected();                 // Return true if we are connected.

  void                                  setClientCallbacks(BLEClientCallbacks *pClientCallbacks);
  void                                  setValue(BLEUUID serviceUUID, BLEUUID characteristicUUID, String value);   // Set the value of a given characteristic at a given service.

  String                                toString();                    // Return a string representation of this client.
  uint16_t                              getConnId();
  esp_gatt_if_t                         getGattcIf();
  uint16_t                              getMTU();
  bool                                  setMTU(uint16_t mtu);

uint16_t m_appId;
private:
  friend class BLEDevice;
  friend class BLERemoteService;
  friend class BLERemoteCharacteristic;
  friend class BLERemoteDescriptor;

  void                                       gattClientEventHandler(
    esp_gattc_cb_event_t event,
    esp_gatt_if_t gattc_if,
    esp_ble_gattc_cb_param_t* param);

  BLEAddress    m_peerAddress = BLEAddress((uint8_t*)"\0\0\0\0\0\0");   // The BD address of the remote server.
  uint16_t      m_conn_id;
//  int           m_deviceType;
  esp_gatt_if_t m_gattc_if;
  bool          m_haveServices = false;    // Have we previously obtain the set of services from the remote server.
  bool          m_isConnected = false;     // Are we currently connected.

  BLEClientCallbacks* m_pClientCallbacks;
  FreeRTOS::Semaphore m_semaphoreRegEvt        = FreeRTOS::Semaphore("RegEvt");
  FreeRTOS::Semaphore m_semaphoreOpenEvt       = FreeRTOS::Semaphore("OpenEvt");
  FreeRTOS::Semaphore m_semaphoreSearchCmplEvt = FreeRTOS::Semaphore("SearchCmplEvt");
  FreeRTOS::Semaphore m_semaphoreRssiCmplEvt   = FreeRTOS::Semaphore("RssiCmplEvt");
  std::map<String, BLERemoteService*> m_servicesMap;
  std::map<BLERemoteService*, uint16_t> m_servicesMapByInstID;
  void clearServices();   // Clear any existing services.
  uint16_t m_mtu = 23;
}; // class BLEDevice


/**
 * @brief Callbacks associated with a %BLE client.
 */
class BLEClientCallbacks {
public:
  virtual ~BLEClientCallbacks() {};
  virtual void onConnect(BLEClient *pClient) = 0;
  virtual void onDisconnect(BLEClient *pClient) = 0;
};

#endif /* CONFIG_BLUEDROID_ENABLED */
#endif /* SOC_BLE_SUPPORTED */
#endif /* MAIN_BLEDEVICE_H_ */
